Improvement in grain-elevators



' UNITED] STATES c. w. THnoDoeE KnAUscH, lor CHICAGO, ILLINOIS, AssIeNon To IIIMSELF PATENT OFFICE,

AND lROBERT MGCABE, ASSIGNORS TO SAID KRAUSCH AND DAVID HOWES, OF SAME PLACE.

IMPROVEMENT IN GRAIN-ELEVATORS.

Specification forming part of Letters Patent No. 38,004, dated March 24, 1863.

To all whom it may concern:

Be it known that I, C. W.THEo. KRAUscH, of the city of Chicago, county of Cook, and State of Illinois, have invented a new and Improved Grain-Elevator 5 and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon, like lettters in the several figures indicating the same parts, and in which drawings.-

Figure 1 is a sectional elevation showing the arrangement of my improved grain-elevator in a warehouse in which grain is to be stored, said elevator being shown in proper position preparatory to the act of transferring grain from a vessel thereto. Fig. 2 is an enlargedside elevation of a portion of the elevator embraced between lines x .r and y y, Fig. l, and Fig.`3, an enlarged view of said portion between lines a: and y y, looking in the` direct-ion of the arrows shown in Figs. l and 2.

In the drawings, A, Fig. 1, indicates the front wall of the warehouse, in which the elevator is situated. a vertical screw-cylinder, B,

being permanently secured through the second and third doors, C and D, of the building in any proper manner, as indicated.

E represents a swinging screw-cylinder7 it being the lowest one of the series employed for the purpose of elevating grain from the vessel F or other receptacle vfrom which the grain is to be transferred to the warehouse. This swinging cylinder E connects with the foot of the stationary screwcylinder B, which in turn connects into the foot orextreme lower end of a second stationary screw-cylinder, B', a succession of vertical stationary screw-cylinders being arranged, as indicated, so as to convey grain to the highest point desirable in the warehouse, from whence it may be spouted7 to any of the grain-rooms within the building.

The cylinder E at its lower extremity is cut away at g, as shown, in order to allow the grain h to fall in contact with the screw I at such point, said screw being stepped at the bottom of the cylinder, as represented, and having the upper end of its shaft z" passing through a cap orbonnet, Ef, which incloses the upper extremity of said cylinder.

of bent arms or supports k k, attached to pul-` ley-shaft z2 and driving-shaft z3 in such manner as to allow their lower ends to articulate freely upon shaft z3, said shafts, respectively, having bearings in projections m m of the bonnet E at the upper extremity of swinging cylinder E and supports m m', attached to the lower extremity of stationary cylinder` B, as shown. On shaft z2 pulleys n n are made to connect with pulleys n n by endless cords o o, said pulleys being securely attached to4 their shafts z2 and z3, the former of said shafts having a gear-wheel, z', engaging with wheel z onscrew I of swinging cylinder E, and the'` latter having a gear-wheel, 24, engaging with wheel z5, situate on the lower extremity of screw I in stationary cylinder B. By these means it will be seen that when power is applied to the drum n2 motion is communicated to the screw l of cylinder B, and the succeeding screws above it, as indicated, as well as to the screw I of the swinging cylinder E, and that as the arms k k freely articulate upon the shaft z3 and always maintain the shaft z2 and z3 a given distance from each other, the swinging cylinder E, with its attachments, may rise and fall, and the cylinder itself may be swung toward or from the wall A in order to accommodate itself to thereceptacle from which the grain is to be elevated.

To facilitate the manipulation of the receiving-tube or swinging cylinder E in the.y process of transferring grain, the cap or bonnet E is provided with an eye, p, to which a cord, p', is attached, the cord passing over a frictionpulley, p2, secured to the wall A above,

,as indicated, and provided with a Weight, p3,

to counterbalance the weight of the receivingtube E and its appurtenances.

As represented in Figs. 1 and 2, it will be observed that the bonnet E is of greater diameter than the cylinder to which it is attached, and that it is applied so as to inclose the upper end of the cylinder. It thus affords a rereptacle for the grain as the latter rises and falls over the upper end of the cylinder on all sides, and at the same time by means of its inclined bottom r acts as a chute to. direct the grain through its mouth r' into the spouts which connect the cylinders E and B. One of those spouts, as shown at H, is hinged to the shaft z2 by connecting-rods s, and at its hinged connections s is contracted, so as to come in contact with the bottom of the bon net E, and so be swung or drawn out into the bonnet as the cylinder E is thrown out more or less from the wall A. This spout is also made-at one of its ends to conform to the cylinder E where it adjoins said cylinder, as represented in Fig. 2, and thus gives proper direction to the flow of thegrain under the varying articulations of said cylinder. A second spout, as at h', is permanently attached to the stationary cylinder B, and connects with the bottom thereof, as clearly showny in Fig. 1, thus enabling the grain to iiow from cylinder to cylinder B, and in the operation ot myelevator the-spout' H will ordinarily have its outer end resting within the outer end of spout h3,- although such positions can be reversed, as indicated in the figures. I would herev state that the connections orv gearing between the stationary cylinders for giving motion to their screws may bev the same as that shown in Fig. 3, with the exception of the arms k 7c, which 'are dispens'ed'with; and, further,'that in such case the bonnet', as at E2, is made to spout the grain directly into the bottom'of the adjoining cylinder, as indicated in Fig. 1, `above the iioor D, and, further, that such geartn g is stationary instead 'of movable or^swing g;ing,77 as fully shown in Fig. 3.

`As I have now described my elevator so far as its particular construction is concerned, I would also state thatthe object of my invention is, rst, to provide means whereby grain vated. To this end, therefore, I employ screws, asV shown, which are to be driven at a high rate' of speed-that is fto say, they are to be made to revolve ata ratei-.of speed` which, while it is sufficient -to overcome theigravity of the berries of the grain being elevated, will also throw the berries from the shaft i', Fig. 1,0utward against the inner surface of the inolosing-tube, so that said screws I I', by theV action of their inclined planes and centrifugal force, shall cause the grain to ascend their inclosing-tubes1 thegrain in its ascentbeing in constant agitation and necessarily scoured in its passage through the ltubes, while at the same time a currentfof-airbeing drawn up by the screws with the grain lthrough the tubes, not only cools and dries the grain, but frees it from dust and impurities thrown off from the berry. I thus by a simple apparatus for elevating grain combine the advantages of cooling, drying, and smuttingfthe .grain so elevated, and for the free passageoffthe -ascending current of air and escape' of the dust'y the top of the'bonnets E and E2 may be'perfo rated, as indicated in Fig. 3, "or bfclmade of wire-cloth'or left open altogether.U l

Having thus described my invention, what I claim as new, and desire -t`o secure'by *Let-f Y ters Patent ofthe United Statesis l.V Providing the tube' E with va receiving' and discharging bonnet, E', substantially as` and for the purpose set forth.

2. So connecting the receiving swinging;

tube E with the stationary tube B, that a revolution may be simultaneously'7V imparted tov the screwsof both tubes, and ysuch motion continued, whether the tube E be elevated orV depressed or swung out from or swung in toward the wall A during the act of elevating the grain.

3; Gonnectingthe swinging'receiving-tube E with the stationaryftube B by' means substantially/'as and for thepurposefdescribed.V

4. The combinatiomby' the swinging receiving tube E, screw I, and -capf'E, and counterbalancing-weight p3, forth'e purpose slet forth. 5. 'Ih'e combination of aseries ot't'ub'es,`E B, and Bf, and a series of elevating-screws I and 

